Milwaukee Instruments pH 7 Calibration Solution, 20 ml Sachets, case of 25 rock-bottom a 1 inch gap or

a 1 inch gap or greater must be present between the top of the fixture and the surface it is mounted under to enable adequate air flow

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Milwaukee Instruments pH 7 Calibration Solution, 20 ml Sachets, case of 25 rock-bottom a 1 inch gap orThis item is sachets Available in 220 ml bottles and 20 ml sachets. Traditional buffer solutions are packed in 220 ml leak proof bottles and are recommended for lab application. Sachets are sealed against light and air and are ideal for on the spot calibration. Simply open, insert the tester or electrode into the sachet and calibrate. Sachets are sold in boxes of 25 pieces.